Sounds are always subjective.., but in all fairness.., this video is a non professional example taken with someone's video camera. With the quality of this video itself I don't think it would rightfully do justice to any of the major keyboards on the market in terms of "sound quality".
However.., if we're looking at the features here.., WOW! Well done Korg!
Round two sound wise Tyros 4.......feature wise Pa3x
Michele Voncken & Peter Baartmans must have a big grin on their faces watching some of the Korg guys demonstrate.
They look lost or not prepared at all to demo a $4k unit.?